Scarlett entered the army in 1818, as a cornet in the 18th Hussars; in 1830, he became a major in the 5th Dragoon Guards, whose Colonel was Sir John Slade. Slade served in the Peninsular War, where he was described as an officer of 'limited ability, lacking initiative and nearly useless' and 'that damned stupid fellow.' Combined with Slade's age, this resulted in Scarlett's appointment as Commanding Officer of the regiment in 1840, a post he held for nearly fourteen years. In 1854 he was close to retirement after an uneventful career during which he had not seen any active service. In this he was typical of the senior ranks of the British cavalry at the time, other than those posted to India.
Crimean War
In April 1854 Colonel Scarlett was appointed Brigadier-General of the Heavy Brigade of Cavalry, under Lord Lucan, Commander of the Cavalry Division. The 5th Dragoon Guards formed part of Scarlett's Heavy Brigade which was sent to the Black Sea in 1854. There it suffered heavily from cholera in the camps of Varna. During the Battle of Balaclava on the morning of 25 October 1854, the Russians had stormed a series of hills known as the Causeway Heights beyond which lay the "Valley of Death" where the Earl of Cardigan would lead the Light Brigade in one of the great military blunders of the nineteenth century. Lord Raglan ordered that Scarlett should move eight squadrons of his brigade back to Kadikoi, to support the 93rd Highlandersdefence of the British base at Balaklava. As Scarlett led his column of the Heavy Brigade across the sprawling tented camp of the Light Brigade, a Russian cavalry force of approximately 2000 was spotted just 800 yards from their left flank, at the top of the heights. The 55-year-old Scarlett quickly assembled just 300 of his Inniskillings and Scots Greys at the foot of the heights, organising them into parade-perfect formation, and sounded the charge. As astounded onlookers watched from the rear, Scarlett led his red-clad Heavies into the centre of the grey mass of Russians. His attack was soon followed by rest of the column. Even the two squadrons of 1st Royal Dragoons who had remained behind to hold the Brigade's original position attacked on their own initiative. This action became known as the Charge of the Heavy Brigade and caused the enemy formation to collapse completely. The Russians were routed and retreated across the heights into the valley that shortly after would become so infamous. Although successful, it defied military doctrine of the time, as the Russians were more numerous and, more importantly, the charge was made uphill against an oncoming force. Cardigan had observed the action with his Lights from a short distance away, and had he used his initiative and chosen this moment to finish what Scarlett had started, the Charge of the Light Brigade might well have been remembered as a success. Later when Cardigan finally led his men into the valley, the Earl of Lucan, Scarlett and the Heavies waited in reserve. Scarlett had started to advance in the hope of salvaging something from the disaster when Lucan, fearing the complete loss of the Light Brigade, sounded the retreat.
From 1837 until 1841 he was a ConservativeMember of Parliament for Guildford. In retirement Scarlett again became involved in politics, standing for election to Parliament in Burnley at the 1868 general election, but was narrowly beaten by the Liberal candidate.
While lacking direct military experience at the outbreak of the Crimean War, Brigadier Scarlett selected his aides-de-camp from able officers who had seen active service in India, and followed their advice. This was in marked contrast to other generals such as Cardigan, who for reasons of social snobbery looked down on "Indian officers". Described as being brave, modest and sensible, Scarlett won popularity amongst the Heavy Brigade. An officer of the Light Brigade of Cavalry commented "Good kind old fellow that he is, they are all very fond of him and will follow him anywhere".
Memorials
A memorial to Scarlett was installed in the Royal Garrison Church at Aldershot. It includes a bronze bust of Scarlett flanked by two full-size bronze cavalry troopers of his former regiments, the 18th Hussars and 5th Dragoon Guards, wearing VCs, four-bar Crimean War medals and Long Service and Good Conduct medals. The brewery tap at Burnley's Moorhouse's Brewery is named in his honour.
